WRX pistons change smog?

BrokEnRex · 05-16-2009, 07:55 PM

Will changing pistons to aftermarket forged pistons , stock bore, and stock compression. will this change my outcome when i go to smog my car?

my engine failed over a year back, and im finally having the motor built, everything is pretty much ordered other then the pistons and crank and rod bearings.

I was lookin at the Wiseco 92mm pistons. Thanks

o yea, and after i pass smog, i am going to be putting a full turboback exhaust with a cobb ap ( i had this setup before and its plenty for what i am lookin for).

VD5505 · 05-17-2009, 07:18 AM

No they wont in your case and since your staying with stock compression really. I would really go with CP forged pistons or JE. The thing about Wiseco you will have a little more piston slap with the engine is cold those pistons have always been like that but it is up to you man.

BrokEnRex · 05-17-2009, 11:11 AM

i want CP or JE but i cant find them with stock sizing and compression.

VD5505 · 05-17-2009, 11:41 AM

P&L Motorsports - Home
Give those guys a call, they are GREAT to deal with I have bought 2 STI shortblocks from them and they are super nice people. I also bought my CP pistons from them. So give them a call and they will hook you up man.

WRXKidid775 · 05-19-2009, 01:42 AM

Even with the weiscos all you had to do is let the car warm up before you romp on it as with many aftermarket pistons but i do agree CP or JE would be a better option. Even if you change the compression it should not affect your smogablity as long as you have no codes in your ECU you should be set.